Siemens 500 standard ユーザーズマニュアル

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Telephone Settings
53
Step by Step
Locking the Telephone to Prevent 
Unauthorized Use
You can prevent unauthorized persons from using your 
telephone and its electronic notebook during your ab-
sence.
Precondition: You must have configured a personal 
identification number (PIN) for your telephone 
To lock and unlock the telephone:
Select and confirm.
or
or
F??
 or 
G??
Enter the code for "on" or "off".
D
Enter the telephone lock PIN 
Changeover on?
Changeover off?
While the telephone is locked, a special dial tone 
sounds when you lift the handset. You can con-
tinue to dial internal numbers as usual.
Your telephone can also be locked or unlocked 
again by an authorized part